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USC Researchers Invent Longer-Lasting Lithium-Ion Battery
2/25/2013

Researchers at the University of Southern California, led by Professor Chongwu Zhou, replaced graphite with porous silicon nanoparticles in anodes of lithium-ion batteries to come up with a new design. The battery, which could be available in two to three years, has a longer life and charges more quickly than lithium-ion batteries used now.   (Source: Mingyuan Ge & Chongwu Zhou/USC)
Researchers at the University of Southern California, led by Professor Chongwu Zhou, replaced graphite with porous silicon nanoparticles in anodes of lithium-ion batteries to come up with a new design. The battery, which could be available in two to three years, has a longer life and charges more quickly than lithium-ion batteries used now.
(Source: Mingyuan Ge & Chongwu Zhou/USC)

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Elizabeth M
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Innovation is happening
Elizabeth M   2/25/2013 10:08:58 AM
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There is a lot of innovation happening in the battery space at the moment and, in my opinion, it couldn't come at a better time. If you think about it, while so much other technology has evolved in leaps and bounds, batteries historically have been very slow to evolve yet we are still quite dependent on them to power all of our gadgets and devices. The idea of a longer-lasting battery that can recharge so quickly is a welcome innovation in this space.

Awile
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Longer Lasting?
Awile   2/25/2013 10:30:55 AM
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I'm confused.  Although the title says that a longer-lasting battery was invented, the story says "Another weakness in the design is that the battery's lifespan isn't as long as traditional graphite-based design".

In what sense is the new battery longer-lasting?

TJ McDermott
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Re: Longer Lasting?
TJ McDermott   2/25/2013 10:43:01 AM
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Awile, you're right, that's rather contradictory.

However, I think the "longer-lasting" statement refers to the fact that the new battery lasts longer on a single charge than a regular LI-Ion battery.

Elizabeth M
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Re: Longer Lasting?
Elizabeth M   2/25/2013 1:25:00 PM
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Yes, you're right, TJ...tricky wording there...It depends on what you mean as longer lasting. The battery will run out more quickly but it will continue to be charged and recharged longer, and apparently they are working on the design so it will eventually be longer lasting in both respects. Sorry for the confusion...I should have worded it more clearly.

TJ McDermott
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Re: Longer Lasting?
TJ McDermott   2/25/2013 1:32:39 PM
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And I should have said "at first glance" in my message.  You DID use two different terms: lifespan and longer lasting.

I'm with you, a longer-lasting battery with quicker charge will be VERY welcome.

Ann R. Thryft
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Re: Longer Lasting?
Ann R. Thryft   2/25/2013 5:44:42 PM
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Thanks for posting this: potentially really good news. And yes, it's helpful to use two different terms for total lifespan and length of charge. In cell phone batteries, the latter is called "talk time."

Charles Murray
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Re: Innovation is happening
Charles Murray   2/25/2013 7:16:57 PM
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Nice story, Liz. Let's hope this technology reaches its potential. Material scientists have tried many lithium-ion chemistries over the past 20 years and short cycle life has often been a problem. Lithium-sulfur, for example, has offered high energy but has had problems getting past about 50 cycles. Most automakers are looking for a minimum of a thousand cycles. Some are looking for 2,000 because they want some margin for warranties. Let's hope these engineers can do it.

Elizabeth M
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Re: Longer Lasting?
Elizabeth M   2/26/2013 6:20:42 AM
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I didn't know that term, Ann, but it makes sense! Now I will know to use it when I am talking about cell phone batteries anyway and avoid any confusion in the future.

Elizabeth M
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Re: Innovation is happening
Elizabeth M   2/26/2013 6:23:49 AM
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Yes, it would be great if they could overcome what you note is a long-time hurdle. This would be a great invention, particularly for the future of electric vehicles and could overcome any remaining hurdles to adoption. It's good to know at least that some very clever people are looking at the problem in new ways.

warren@fourward.com
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Now we're talkin!
warren@fourward.com   2/26/2013 9:16:31 AM
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The weakness in any portable system is the battery. If you can recharge in 10 minutes, you have a winner. And they said nothing good ever came out of California...

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